EP1932489B1 - Pièce à main avec dispositif d'éclairage - Google Patents

Pièce à main avec dispositif d'éclairage Download PDF

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Publication number
EP1932489B1
EP1932489B1 EP07020749.3A EP07020749A EP1932489B1 EP 1932489 B1 EP1932489 B1 EP 1932489B1 EP 07020749 A EP07020749 A EP 07020749A EP 1932489 B1 EP1932489 B1 EP 1932489B1
Authority
EP
European Patent Office
Prior art keywords
handpiece
optical semiconductor
semiconductor element
electric
lighting device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP07020749.3A
Other languages
German (de)
English (en)
Other versions
EP1932489A1 (fr
Inventor
Norbert Schatz
Karl Schmiedlechner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
W&H Dentalwerk Buermoos GmbH
Original Assignee
W&H Dentalwerk Buermoos GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by W&H Dentalwerk Buermoos GmbH filed Critical W&H Dentalwerk Buermoos GmbH
Priority to EP07020749.3A priority Critical patent/EP1932489B1/fr
Publication of EP1932489A1 publication Critical patent/EP1932489A1/fr
Application granted granted Critical
Publication of EP1932489B1 publication Critical patent/EP1932489B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/088—Illuminating devices or attachments

Definitions

  • the present invention relates to a medical, in particular dental handpiece with a lighting device comprising at least one optical semiconductor element.
  • a dental handpiece which has a lighting device which can emit radiation of different wavelengths in order to be able to carry out different treatments.
  • the handpiece comprises a plurality of light sources in the form of LEDs and a switch via which optionally one or more LEDs can be operated so that, for example, green or blue light for treatments or white light is emitted for illuminating the treatment site.
  • the present invention is therefore based on the object of providing a medical, in particular a dental handpiece with a receptacle for moving tools and with a lighting device, with the treatments at different operating parameters, for example, different wavelengths are feasible, the handpiece be as simple as possible should and should come to any enlargement of the outer dimensions of the handpiece.
  • the medical, in particular dental, handpiece described has an illumination device with at least one optical semiconductor element, wherein the at least one optical semiconductor element is arranged at least partially in the interior of the handpiece and is detachably connected to the handpiece.
  • the user is enabled to easily connect the optical semiconductor element required for the respective treatment, which has, for example, a certain desired power and / or emits a desired wavelength to the handpiece.
  • the handpiece can thus be used for different applications, without the need for more space-consuming components such as switches, etc. are required.
  • the outer dimensions of the handpiece thus remain unchanged compared to known handpieces.
  • the arrangement of the at least one optical semiconductor element at least partially in the interior of the handpiece ensures that the optical semiconductor element does not hinder or impair the handling of the handpiece.
  • the electrical components that supply the optical semiconductor element with power, in particular cables and contacts are housed in the handle, whereby the handling of the handpiece is further improved.
  • the at least one optical semiconductor element can be easily replaced if it is damaged or no longer functional. This can be done in particular by the penetration of particles, liquids or gases, for example liquid or gaseous cleaning media through the illumination device to the optical semiconductor element. When replacing only the non-functional optical semiconductor element can thus be changed, whereas the functional handpiece can be used.
  • the handpiece according to the invention can be used for different treatments for which the user until now required several handpieces. This reduces acquisition costs as well as cleaning and maintenance costs for the user.
  • the detachable connection of the at least one optical semiconductor element to the handpiece can be made by any known releasable connection means, for Example by a positive or non-positive connection, by clamping, screw or plug connections.
  • the handpiece can be constructed in two parts, wherein the separation point between the two handpiece parts is preferably provided approximately where the semiconductor element is arranged, so that it is easily accessible.
  • the head and grip part of the handpiece can be separable from one another and the at least one optical semiconductor element can be arranged in the region of the separation point.
  • an opening is provided in the outer sleeve of the handpiece, which is formed such that the at least one optical semiconductor element can be performed through this opening.
  • the opening must be large enough for the at least one optical semiconductor element to be feasible, it must be arranged at a position of the outer sleeve to which the optical semiconductor element in particular has access from the interior of the handpiece or where it can be moved, for example displaced, and it should also be provided at a position of the handpiece that is easily accessible from outside, so that the optical semiconductor element can be easily passed through the opening for the user.
  • an opening is used as the opening for passing through the optical semiconductor element, which also fulfills a further object, so that no additional opening for passing through the optical semiconductor element in the outer sleeve of the handpiece is to be provided.
  • the light-emitting opening or the coupling opening can serve.
  • the handpiece comprises a battery charger with an opening through which a battery or an accumulator can be inserted, then the optical semiconductor element can also be inserted into or removed from the handpiece via this opening.
  • the handpiece is designed such that the at least one optical semiconductor element is movable through an interior of the handpiece, in particular to an opening provided in the outer sleeve of the handpiece, through which the optical semiconductor element can be carried out, ie removed from the handpiece or in this is insertable.
  • the at least one optical semiconductor element is movable through an interior of the handpiece, in particular to an opening provided in the outer sleeve of the handpiece, through which the optical semiconductor element can be carried out, ie removed from the handpiece or in this is insertable.
  • either corresponding passages, Passages or clearances may be provided in the interior of the handpiece and components disposed therein and / or one or more of the components disposed in the handpiece are removable from the handpiece or movable therein so that the optical semiconductor element is movable through the interior of the handpiece after removal of these components is.
  • the head part of the handpiece is arranged to be movable, for example displaceable relative to the grip part, so that the optical semiconductor element clamped by the head part in the handpiece can be moved in the handpiece.
  • one or more components for example, coupling elements for connecting the handpiece to a supply or drive unit or media lines may be disposed on the handpiece or inside the handpiece so as to be slidable or removable from the handpiece so as to provide access to the handpiece to be replaced optical semiconductor element or its removal from the handpiece is possible or easier.
  • the at least one optical semiconductor element is formed as part of a lighting module, in particular of a hermetically sealed illumination module, wherein the at least one optical semiconductor element is detachable from the handpiece together with the illumination module.
  • the integration of the at least one optical semiconductor element into a lighting module has several advantages.
  • the lighting module may be provided with additional functional elements, for example, one or more fastening means for releasably connecting the lighting module with the handpiece.
  • there may be an anti-rotation device or positive locking elements which prevent the illumination module from rotating or permit the insertion or fastening of the illumination module and the optical semiconductor element only in a selected position. This is particularly important for the proper connection of the optical semiconductor element to the power source.
  • sealing means for example for sealing an interior of the handpiece to the environment, light guides, light emission windows, protective glasses or potting material, which surrounds the electrical contacts of the at least one optical semiconductor element and the associated electrical lines or contacts, connects and seals, can be provided on the illumination module ,
  • the illumination module is hermetically sealed to the outside or comprises a hermetically sealed interior, in which the at least one optical Semiconductor element is added.
  • the hermetic shield is formed so that the optical semiconductor element can be sterilized, ie the repeated introduction into an environment with temperatures of at least 120 ° C, preferably from 130 ° C, more preferably from 134 ° C, and / or with water vapor or with chemicals or gases, especially disinfectants and / or with pressure fluctuations of about 1 bar unscathed.
  • the hermetic shielding can be effected by encapsulation of the at least one optical semiconductor element with metallic and / or plastic elements. It can also be done by covering the at least one optical semiconductor element with curable plastics or resins, for example epoxy resins.
  • a plurality of optical semiconductor elements can be contained in the illumination module, so that a higher light output power can be achieved.
  • the use of the optical semiconductor elements is facilitated since the plurality of optical semiconductor elements can be handled, for example, exchanged, in common.
  • the lighting device of the handpiece is with other components, such as with a light guide and / or with an optical element such as a lens, and in particular with electrical or electronic components, such as with an electrical line and / or electrical Contacts and / or with a support device, preferably a circuit board and / or with electrical coupling elements and / or with electrical or electronic components such as rectifiers, resistors, transformers, etc., wherein at least one of these components with the at least one optical semiconductor element or with the illumination module is detachable from the handpiece.
  • electrical or electronic components such as with an electrical line and / or electrical Contacts and / or with a support device, preferably a circuit board and / or with electrical coupling elements and / or with electrical or electronic components such as rectifiers, resistors, transformers, etc.
  • the component which can be jointly released and exchanged with the optical semiconductor element or with the illumination module is particularly preferably the electrical leads or contacts which serve to connect the optical semiconductor element or the illumination module to a current source. If the optical semiconductor element or the illumination module can be detached from the handpiece together with the electrical leads or contacts, then the optical semiconductor element or the illumination module and the electrical leads or contacts can be firmly connected to each other, ie, soldered, welded and / or through on Covering material, for example, a potting material, in particular by a synthetic resin, for example, epoxy resin or silicone resin are inseparably wrapped.
  • This non-detachable connection has the advantage that the optical semiconductor element or the illumination module can be introduced into the handpiece only in a specific position, namely such that a connection to the power supply or current source can be established via the lines or contacts, in particular that the lines or Contacts to the power source are turned.
  • This provides a way to insert the optical semiconductor element into the handpiece so that it is correctly connected to the power supply, i. the positive and negative poles of the optical semiconductor element are each connected to the plus or minus pole of the direct current source, so that the connection to the current source takes place in accordance with the current flow direction of the optical semiconductor element.
  • this can prevent the user from having to insert the optical semiconductor element or the illumination module in a random position into the handpiece and then having to try and determine whether the optical semiconductor element or the illumination module is correct, ie. is attached in the appropriate current flow direction in the handpiece, and if this is not the case, the optical semiconductor element or the lighting module has to be removed from the handpiece and replaced in another position.
  • the introduction of the illumination module in a predetermined position in the handpiece has still further advantage, for example if the illumination module comprises an optical element, preferably a lens, which focuses the radiation generated by the optical semiconductor element to a specific point, in particular to the tip of the im Handpiece clamped tool. If the illumination module can only be inserted into the handpiece in one position, this also ensures that the lens is arranged in the handpiece in such a way that it directs the radiation in the desired direction and to the desired point.
  • the illumination module comprises an optical element, preferably a lens, which focuses the radiation generated by the optical semiconductor element to a specific point, in particular to the tip of the im Handpiece clamped tool.
  • a circuit in particular an electronic circuit, which takes over the energy provided by the current source and adapts it to the needs of the at least one optical semiconductor element can additionally be provided in the handpiece.
  • it takes over the current of the current source, regardless of its polarity, and outputs it with a defined polarity, matching the optical semiconductor element connected to the circuit.
  • a reverse polarity protection circuit consisting of a plurality of diodes and optionally further elements, in particular a so-called bridge circuit or a bridge rectifier circuit may be provided.
  • the circuit may also include other elements such as rectifiers, transformers, transducers, resistors, etc., in particular to condition the current or voltage so that it is suitable for the connected optical semiconductor element.
  • such an optical semiconductor element for example a light-emitting diode, is operated with direct current of approximately 2 to 3 V and at least 20 mA, preferably more than 50 mA.
  • the circuit need not necessarily be provided in the handpiece, but may also be contained in other, connected to the handpiece or connectable instruments or equipment, so that the reaching of the handpiece current already has a defined polarity or suitable current parameters.
  • the medical, in particular dental, handpiece 1 consists of a handle part 14 and an angled head part 13 arranged in the head part 13.
  • a movable tool holder is arranged in the head part 13, in which a tool, for example a drill that can be put into rotation, can be accommodated.
  • the tool is driven by at least one drive element, which is connected to the tool, wherein the drive element is preferably designed as a rotating shaft.
  • the drive element can have further components, for example one or more additional rotating or oscillating shafts, one or more gears or gears, a motor, an impeller, a vibration generator, etc.
  • a push button 15 is provided for operating a tool release device, so that a tool received or clamped in the tool holder can be released from the tool holder.
  • a tool opening is provided, through which a tool can be inserted into the tool holder. The tool is thus angled to the longitudinal axis of the handle portion 14 from the head portion 13 out.
  • the at least one optical semiconductor element is received in an interior of the illumination module 7, wherein according to a preferred embodiment, the interior is hermetically sealed from the environment, so that the optical semiconductor element can be subjected to different cleaning and care measures, in particular sterilization, together with the handpiece.
  • the hermetically sealed interior is formed by a base 16 and by a tightly connected, for example, welded cap 17.
  • a light emitting window On the cap 17 is further provided a light emitting window, through which the radiation generated by the optical semiconductor element can pass.
  • further optical elements such as light guides or lenses can be provided. These optical elements may be formed as part of the illumination module 7 or as separate components.
  • the line 10 and the contacts 23 are connected by the VergussmasseMech 22 inextricably linked.
  • the line 10 and the contacts 23 are additionally soldered together, welded or crimped (squeezed).
  • the potting compound body 22 also seals the illumination module 7 and the contacts 23.
  • a sealing element 9 for example, a sealing ring is received in a groove, which is clamped between the outer sleeve 2 of the handpiece 1 and the outer jacket of the socket 18.
  • the sealing element 9 seals the interior 4 of the handpiece 1 and the components contained therein from the environment and prevents the penetration of particles, dirt, treatment media, cleaning agents, etc. in the handpiece 1 and the leakage of lubricant from the interior of the handpiece 1.
  • a Such seal may alternatively or additionally be attached to the handpiece 1 itself.
  • the insertion of the illumination module 7 in the handpiece 1 also takes place via the interior 4 and the coupling opening 6, in the reverse order as described for the release of the illumination module 7 from the handpiece 1.

Claims (15)

  1. Pièce à main médical, en particulier dentaire (1, 1') pourvue d'un manchon extérieur (2, 2'), d'un raccord d'outil, destiné à un outil susceptible d'être mis en mouvement, d'au moins un élément d'entraînement, destiné à mettre l'outil en mouvement, et d'un dispositif d'éclairage (3, 3'), destiné à diffuser un rayonnement sur un point de préparation, le dispositif d'éclairage (3, 3') comprenant au moins un élément optique semi-conducteur, qui est placé au moins en partie à l'intérieur de de la pièce à main (1, 1'), le dispositif d'éclairage (3, 3') comportant une douille (18) ainsi que des contacts électriques (23) ou des broches électriques, qui pour l'approvisionnement en énergie de l'au moins un élément optique semi-conducteur sont relié(e)s avec un conduit électrique (10), le conduit électrique (10) comportant un tronçon pourvu d'une gaine protectrice isolante et un tronçon qui est exempt d'une gaine protectrice, caractérisée en ce
    qu'il est prévu une matière de gainage qui entoure totalement et qui assure l'étanchéité des contacts électriques (23) ou des broches électriques et du tronçon de conduit électrique (10), qui est exempt d'une gaine protectrice isolante et qui les assemble les uns avec les autres de manière indissociable.
  2. Pièce à main (1, 1') selon la revendication 1, caractérisée en ce que les contacts électriques (23) ou les broches électriques et le conduit électrique (10) sont brasés, soudés ou écrasés les uns avec les autres.
  3. Pièce à main (1, 1') selon l'une quelconque des revendications précédentes, caractérisée en ce que
    la matière de gainage comprend un corps en masse de scellement (22).
  4. Pièce à main (1, 1') selon la revendication 3, caractérisée en ce que
    l'au moins un élément optique semi-conducteur est conçu en tant qu'élément d'un module d'éclairage (7, 7'), le corps en masse de scellement (22) étant placé sur le module d'éclairage (7, 7'), en particulier dans une douille (18) du module d'éclairage (7, 7').
  5. Pièce à main (1, 1') selon la revendication 4, caractérisée en ce que
    le module d'éclairage (7, 7') comporte un espace intérieur hermétiquement fermé vers l'extérieur, destiné au logement de l'au moins un élément optique semi-conducteur.
  6. Pièce à main (1, 1') selon la revendication 4 ou 5, caractérisée en ce que
    le module d'éclairage (7, 7') comprend une douille (18) en matière électriquement isolante.
  7. Pièce à main (1, 1') selon l'une quelconque des revendications précédentes, caractérisée en ce que
    l'élément optique semi-conducteur est assemblé de manière amovible avec la pièce à main (1, 1'), la pièce à main (1, 1') étant conçue de telle sorte que pour le détacher de la pièce à main (1, 1'), l'au moins un élément optique semi-conducteur est déplaçable à travers un espace intérieur (4) de la pièce à main (1, 1').
  8. Pièce à main (1, 1') selon l'une quelconque des revendications 3 à 7, caractérisée en ce que
    la pièce à main (1, 1') comporte une partie tête (13) et une partie manche (14), sur la partie tête (13), un prolongement (21) étant prévu pour assembler la partie tête (13) avec la partie manche (14) et le prolongement (21) entrant en contact avec le corps en masse de scellement (22).
  9. Pièce à main (1, 1') selon l'une quelconque des revendications précédentes, caractérisée
    en ce qu'entre le manchon extérieur (2) de la pièce à main (1, 1') et une douille (18) du dispositif d'éclairage (3, 3') ou sur le socle (16') du module d'éclairage (7') est prévu un élément d'étanchéité (9, 9').
  10. Pièce à main (1, 1') selon l'une quelconque des revendications précédentes, caractérisée en ce que
    la matière de gainage enveloppe au moins une partie de la gaine protectrice isolante du conduit électrique (10).
  11. Pièce à main (1, 1') selon l'une quelconque des revendications précédentes, caractérisée en ce que
    le dispositif d'éclairage (3, 3') comporte une fenêtre distributrice de lumière, une douille (18, 18') entourant le dispositif d'éclairage (3, 3') sur sa circonférence et une face opposée à la fenêtre distributrice de lumière pourvue des contacts électriques (23) ou des broches électriques, la matière de gainage étant prévue sur la face opposée à la fenêtre distributrice de lumière.
  12. Pièce à main (1, 1') selon l'une quelconque des revendications précédentes, caractérisée en ce que
    la pièce à main (1, 1') est conçue en deux parties, permettant de détacher l'au moins un élément optique semi-conducteur et de le retirer de la pièce à main (1, 1'), la zone de séparation entre les deux parties de la pièce à main étant prévue environ là, où est placé l'élément semi-conducteur.
  13. Pièce à main (1, 1') selon l'une quelconque des revendications 1 à 11, caractérisée en ce que
    dans le manchon extérieur (2, 2') de la pièce à main (1, 1') est prévu un orifice distributeur de lumière (5) qui est conçu de telle sorte que l'au moins un élément optique semi-conducteur puisse traverser l'orifice distributeur de lumière (5).
  14. Pièce à main (1, 1') selon l'une quelconque des revendications précédentes, caractérisé par
    un circuit qui reprend l'énergie électrique mise à disposition par une source électrique, indépendamment de sa polarité et la restitue avec une polarité définie de manière adaptée vers l'élément optique semi-conducteur connecté sur le circuit.
  15. Pièce à main (1, 1') selon l'une quelconque des revendications 5 à 14, caractérisée en ce que
    dans le module d'éclairage (7, 7') sont contenus plusieurs éléments optiques semiconducteurs.
EP07020749.3A 2006-11-30 2006-11-30 Pièce à main avec dispositif d'éclairage Not-in-force EP1932489B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07020749.3A EP1932489B1 (fr) 2006-11-30 2006-11-30 Pièce à main avec dispositif d'éclairage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06024780A EP1927324A1 (fr) 2006-11-30 2006-11-30 Pièce a main avec dispositif d'éclairage
EP07020749.3A EP1932489B1 (fr) 2006-11-30 2006-11-30 Pièce à main avec dispositif d'éclairage

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP06024780A Division EP1927324A1 (fr) 2006-11-30 2006-11-30 Pièce a main avec dispositif d'éclairage

Publications (2)

Publication Number Publication Date
EP1932489A1 EP1932489A1 (fr) 2008-06-18
EP1932489B1 true EP1932489B1 (fr) 2019-07-03

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP07020749.3A Not-in-force EP1932489B1 (fr) 2006-11-30 2006-11-30 Pièce à main avec dispositif d'éclairage
EP06024780A Withdrawn EP1927324A1 (fr) 2006-11-30 2006-11-30 Pièce a main avec dispositif d'éclairage

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP06024780A Withdrawn EP1927324A1 (fr) 2006-11-30 2006-11-30 Pièce a main avec dispositif d'éclairage

Country Status (2)

Country Link
US (1) US8038439B2 (fr)
EP (2) EP1932489B1 (fr)

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
EP2174615A1 (fr) * 2008-10-10 2010-04-14 W & H Dentalwerk Bürmoos GmbH Section d'élément de ventilateur dans des systèmes de traitement de l'air
JP2010246881A (ja) * 2009-03-23 2010-11-04 Nakanishi:Kk 光源内蔵型カップリング
US20120052460A1 (en) * 2010-08-30 2012-03-01 Dentalez, Inc. Dental handpiece swivel coupling with an autoclavable illuminator assembly
RU2705046C2 (ru) 2013-04-01 2019-11-01 Винод В. ПАТХИ Осветительное устройство
USD938095S1 (en) 2013-04-01 2021-12-07 Pathy Medical, Llc Lighting device
EP2796108B1 (fr) 2013-04-24 2017-08-23 W & H Dentalwerk Bürmoos GmbH Pièce à main médicale, en particulier dentaire
US9839491B2 (en) * 2014-09-02 2017-12-12 Cao Group, Inc. Dental handpieces

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FR2579447A1 (fr) * 1985-03-27 1986-10-03 Micro Mega Sa Piece a main dentaire a contre-angle ou a turbine munie de moyens d'eclairage de la place de traitement
US5683246A (en) * 1995-04-17 1997-11-04 Micro Motors, Inc. Illumination apparatus for dental handpiece
JPH10165419A (ja) 1996-12-06 1998-06-23 Osada Res Inst Ltd 光照射ハンドピース
JPH10337292A (ja) * 1997-06-09 1998-12-22 Nakanishi:Kk 歯科用ハンドピース
DE19963706C5 (de) * 1999-12-29 2012-09-06 Kaltenbach & Voigt Gmbh Verfahren zur Herstellung und Montage eines Beleuchtungskörpers für ein medizinisches oder dentalmedizinisches Handstück
JP2001275964A (ja) * 2000-03-29 2001-10-09 Matsushita Electric Ind Co Ltd ビデオスコープ
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MX2007010011A (es) * 2005-02-17 2008-01-16 Discus Dental Impressions Inc Herramienta dental ultrasonica que tiene una fuente luminosa.
US20080108010A1 (en) * 2006-11-07 2008-05-08 Wen-Hao Wang Illuminator for a dental drill

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
DE19654400A1 (de) * 1996-12-29 1998-07-02 Otto Rosenstatter Dentales Handstück

Also Published As

Publication number Publication date
US8038439B2 (en) 2011-10-18
US20080131835A1 (en) 2008-06-05
EP1927324A1 (fr) 2008-06-04
EP1932489A1 (fr) 2008-06-18

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DE102011018688A1 (de) Batterielichtquelle

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